Update expectations for Test-Mac10.9-MacMini6.2-HD4000-x86_64-Debug

TBR=borenet

Review URL: https://codereview.chromium.org/797273004
Handle SkBitmaps which have no pixels in SkPDFImage.

A test that ensures this no longer crashes has been added.

BUG=skia:3232

Review URL: https://codereview.chromium.org/802713002
Add Herb as a Skia committer

TBR=hcm@google.com

NOTRY=true

Review URL: https://codereview.chromium.org/803633002
Harden validation for SkPathRef

Review URL: https://codereview.chromium.org/801003003
improve cull, so we don't create empty segments

BUG=skia:3224

Review URL: https://codereview.chromium.org/798093002